Education moon, mars, venus

1. Mass of the Moon is about1/80 that of the Earth, and its diameter is about 1/4 that of the Earth. The orbit is very nearly circular (eccentricity ~ 0.05) with a mean separation…

Documents The Earth’s Moon with a telescope

The Earth’s Moon with a telescope The Moon also has large, dark smooth areas covering about 17% of the Moon's surface that people originally thought were seas of liquid…